Telephone-switch



(No Model.)

J. R. H. HINTON.

TELEPHONE SWITCH.

Patented Feb. '21, 1888.

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"UNITED STATES PATENT @rrrch.

JOSEPH. R. H. HINTON, OF BALTIMORE, MARYLAND.

' TELEPHONE SWiTGl-l.

EJPECE-FECATIOII forming part of Letters Patent No. 378,250, datedFebruary 21, 1888.

Serial No. 240,119. (No model.)

T 0 aZZ whom, it may concern.-

Be it known that I, JOSEPH R. H. HrNToN, a citizen of the United States,residing at Balti1nore,in the State of Marylanthhavc invented new anduseful Improvements in Telephone Switches, of which the following is aspecification.

This invention relates to certain new and useful improvements intelephone-switches; and it consists, substantially, in such features ofconstruction, arrangement, and combinations of parts as will hereinafterbe more particularly described, and pointed out in the claims.

The object of the invention is to provide a switch of the characterreferred to which shall place the telephone in and out by the simple actof detaching it from its supporting-hook and again suspending itthereon, all as will hereinafter more fully appear when taken inconnection with the accompanying drawings, whercin Figure 1 is a sideelevation of a telephoneswitch embodying myimprovements,and Fig. 2-is acentral vertical sectional view thereof. Fig. 3 is a vertical elevationtaken from the rear of the switch, and Figs. 4 and 5 are views in detailto show the construction of certain parts.

Before proceeding with a more full descrip tion, I desire to state thatI am aware that telephoneswitches have been heretofore i11- ventedwherein the line and battery wires are brought in and out by the act ofremoving the telephone from and again placing it upon its supportinghook; but,so far as my knowledge on the subject extends, it is thoughtthat the construction, arrangement, and combinations of parts hereinresorted to are substantially different from anything heretoforepatented.

Reference being had to the several parts by the letters marked thereon,A represents the front piece, having about centrally thereof a verticalslot or recess, a, and provided on its rear side, in proximity to saidrecess, with melength of the roller is formed a slot, d. The roller isalso provided with a small metal shaft or spindle, c, by which it issupported in the bearings I) ll of the bearing-plate I).

0 represents the metallic supporting-hook for the telephone D, which iskeyed, as at f, or otherwise secured to the shaft or spindle e, and isformed or provided with a projection or arm, 9, fitting in the slot (1of the roller B. The said hook is formed with curved branches h h,between which the telephone D is slipped when attaching it to besupported. In the movement of these branches up and down ac cordingly asthe telephone is removed or at taehed, they are guided, and the hookthus kept in place, by a grooved guiding-bracket, E, formed with orsecured to the metal face plate A, secured to the front A and slottedcorresponding to a for the movement of said hook.

F F and F F represent pairs of metallic springs secured, respectively,at one of their ends to the inner side of A, their opposing extremitiesbeing bent, as shown, by which the proper action will be had inoperation. To the lower extremity of the springs F the bat tery-wiresmare electrically connected, while to the upper extremity of the springsF the line-wires a are in like manner attached. When the telephone is inplace on the bracket E, the contiguous ends of the springs F F will bein electrical contact with the arm g of the hook C, while thecorresponding ends of the springs F F will be separated or apart andbear against opposite sides of the rib 0, formed with the roller, andthus be out of contact electrically. (See Fig. 1.) By the act of turningthe hook O upward to remove the telephone the opposite ends of thesprings F F will be separated, and the roller in being turned brings itsrib c to such position as to allow the corresponding ends of the springsF F to come together and be in contact electrically. It will thus beseen that the usual signaling can be first had across the line and thetelephone afterward employed in the usual manner.

From the foregoing description it will be seen that the parts will allact effectively to produce the results desired, and that they are soarranged together as to be always reliable in IOO action and'not apt toget out of order. By working in the groove Z of the bracket E the hook Ois always guided and kept in proper position, and the movement of theroller in separating and contacting the springs exerts so small a degreeof tension to the latter as that they are not apt to become distortedfrom their original and intended shapes.

Having thus described my invention, what I 0 of the insulating-roller B,formed or provided with rib c and groove (1, the hook 0, having arm 9,fitting said groove, and the springs F F and F F, bent, as shown, andhaving the 1 line and battery wires attached, all substantially as andfor the purpose described.

4. In a telephone-switch, the combination, with the front piece, A,having slot a, and the bearing-plate I), attached to therear thereof,

of the roller B, supported by said bearingplate and having rib c andgrooved, the hook 3 0, having arm fitting in said groove and extendingthrough slot a, the springs F F and F F, bent at their opposing ends, asshown, and adapted to be brought in and out of contact electrically, andthe bracket E, having a groove in which the curved branches h and h ofthe hook move in the act of detaching and suspending the telephone,substantially as described.

Intestimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JOSEPH R. H. HINTON.

Witnesses:

CHAS. H. MILLER, LEE PURoELL.

